Compile for 32bit from a 64bit system

[Genie23]

Hello,

Another probably silly question, but thanks to your past help I was able to finish rewriting with the Compose framework a fairly simple PDF merge application that I had originally written in Ruby and packaged for Windows with OCRA.

Is it possible to compile the application for 32 and 64bit platforms from a 64bit system ? Either a 32bit-only compilation (normally compatible with 64bit systems, at least on Windows) or by creating two installers (one labeled 32bit or x86 and the other labeled 64bit or x64, for example).

Thanks again for your past and present help.

PS : can the Show and Tell category be used to present a free shared software (most probably under Creative Commons CC-BY-ND license) created with Compose (with a link to my site in this case, to the official presentation page) or would that go against the rules ?

[Genie23]

Well, after a google search, I just learned something: Oracle and OpenJDK only provide binaries for 64-bit computers, so no compilation for 32-bit is possible.